import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'

Vue.use(VueRouter)

const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', component: Login },
  { path: '/home', component: Home ,redirect:'/welcome', children:[
	  { path: '/welcome', component: Welcome },
	  { path: '/users', component: Users }
	]  
  }
]

const router = new VueRouter({
  routes
})

//挂载路由导航守卫
router.beforeEach((to,from,next)=>{
	//to 将要访问的路径
	//from 代表从哪个路径跳转而来
	//next 是一个函数，表示放行
	//	next()放行	next('/login')强行跳转
	
	if(to.path ==='/login') return next();
	//获取token
	const tokenStr = window.sessionStorage.getItem('token')
	if(!tokenStr) return next('/login')
	next()
})

export default router
